The Haven-finding Art: A History of Navigation from Odysseus to Captain CookHollis and Carter for the Institute of Navigation, 1971 - 310 ページ |
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... difference , and therefore the longitude difference be- tween two places could be found . But since there must be a : competent observer at either place furnished with Ephemerides , and each must have a precise means of measuring his ...
... difference , and therefore the longitude difference be- tween two places could be found . But since there must be a : competent observer at either place furnished with Ephemerides , and each must have a precise means of measuring his ...
188 ページ
... difference , which is 16 ° 15 ' , and also the difference of their declinations , which is 4 ° 55 ' , and for greater ease in getting square roots I first reduce them to minutes . Then multiplying each one by itself I get for the first ...
... difference , which is 16 ° 15 ' , and also the difference of their declinations , which is 4 ° 55 ' , and for greater ease in getting square roots I first reduce them to minutes . Then multiplying each one by itself I get for the first ...
229 ページ
... difference of latitude to the difference of longitude So the cosine of the middle latitude to the tangent of the rhumb required . ' Other trigonometrical formulae are given for data likely to be required by the sailor , e.g. the Sun's ...
... difference of latitude to the difference of longitude So the cosine of the middle latitude to the tangent of the rhumb required . ' Other trigonometrical formulae are given for data likely to be required by the sailor , e.g. the Sun's ...
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